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Title: Gauge B-L model with residual Z 3 symmetry

Abstract

We study a gauge B–L extension of the standard model of quarks and leptons with unconventional charges for the singlet right-handed neutrinos, and extra singlet scalars, such that a residual Z 3 symmetry remains after the spontaneous breaking of B–L. The phenomenological consequences of this scenario, including the possibility of long-lived self-interacting dark matter and Z' collider signatures is discussed. Lepton number L is a familiar concept. It is usually defined as a global U (1) symmetry, under which the leptons of the standard model (SM), i.e. e,μ,τ together with their neutrinos ν eμτ have L=1, and all other SM particles have L=0. In the case of nonzero Majorana neutrino masses, this continuous symmetry is broken to a discrete Z 2 symmetry, i.e. (-1) L or lepton parity. In this paper, we consider a gauge B–L extension of the SM, such that a residual Z 3 symmetry remains after the spontaneous breaking of B–L. This is then a realization of the unusual notion of Z 3 lepton symmetry. It has specific phenomenological consequences, including the possibility of a long-lived particle as a dark-matter candidate.

Authors:
 [1];  [1];  [2]; ORCiD logo [1]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Physics and Astronomy
  2. The institute of Mathematical Sciences, Chennai (India)
Publication Date:
Research Org.:
Univ. of California, Riverside, CA (United States). Dept. of Physics and Astronomy
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1214243
Alternate Identifier(s):
OSTI ID: 1241140
Grant/Contract Number:
SC0008541
Resource Type:
Journal Article: Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 750; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Ma, Ernest, Pollard, Nicholas, Srivastava, Rahul, and Zakeri, Mohammadreza. Gauge B-L model with residual Z3 symmetry. United States: N. p., 2016. Web. doi:10.1016/j.physletb.2015.09.010.
Ma, Ernest, Pollard, Nicholas, Srivastava, Rahul, & Zakeri, Mohammadreza. Gauge B-L model with residual Z3 symmetry. United States. doi:10.1016/j.physletb.2015.09.010.
Ma, Ernest, Pollard, Nicholas, Srivastava, Rahul, and Zakeri, Mohammadreza. Wed . "Gauge B-L model with residual Z3 symmetry". United States. doi:10.1016/j.physletb.2015.09.010.
@article{osti_1214243,
title = {Gauge B-L model with residual Z3 symmetry},
author = {Ma, Ernest and Pollard, Nicholas and Srivastava, Rahul and Zakeri, Mohammadreza},
abstractNote = {We study a gauge B–L extension of the standard model of quarks and leptons with unconventional charges for the singlet right-handed neutrinos, and extra singlet scalars, such that a residual Z3 symmetry remains after the spontaneous breaking of B–L. The phenomenological consequences of this scenario, including the possibility of long-lived self-interacting dark matter and Z' collider signatures is discussed. Lepton number L is a familiar concept. It is usually defined as a global U (1) symmetry, under which the leptons of the standard model (SM), i.e. e,μ,τ together with their neutrinos νe,νμ,ντ have L=1, and all other SM particles have L=0. In the case of nonzero Majorana neutrino masses, this continuous symmetry is broken to a discrete Z2 symmetry, i.e. (-1)L or lepton parity. In this paper, we consider a gauge B–L extension of the SM, such that a residual Z3 symmetry remains after the spontaneous breaking of B–L. This is then a realization of the unusual notion of Z3 lepton symmetry. It has specific phenomenological consequences, including the possibility of a long-lived particle as a dark-matter candidate.},
doi = {10.1016/j.physletb.2015.09.010},
journal = {Physics Letters. Section B},
number = C,
volume = 750,
place = {United States},
year = {Wed Sep 07 00:00:00 EDT 2016},
month = {Wed Sep 07 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.physletb.2015.09.010

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Cited by: 20works
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